Sig Sauer M400 Forge | 5.56 NATO | 11.5" | ROMEO-MSR Gen II | Magpul Brace |30rd Pistol

SIG Sauer M400 Forge 11.5-Inch Pistol

The M400 Forge pistol uses an 11.5-inch cold-hammer-forged barrel, carbine-length direct-impingement system and free-float handguard for a compact 5.56 NATO platform. A factory ROMEO-MSR Gen II optic and flat two-stage trigger create a ready-to-configure package.

Key Features

• 11.5-inch CHF barrel with 1:7 twist
• Carbine-length direct-impingement gas system
• ROMEO-MSR Gen II 2 MOA optic
• TriggerTech 3.5-pound two-stage flat trigger
• Magpul BSL brace and one 30-round magazine

Only the firearm and specifically listed included items are included. Buyer is responsible for compliance with applicable laws. This firearm must ship to an FFL.

Why Choose This Configuration?

The M400 Forge pistol condenses the Forge feature set around an 11.5-inch cold-hammer-forged barrel. Compared with a 16-inch rifle, the shorter barrel creates a more compact overall package but also changes muzzle velocity, blast and handling. SIG uses a carbine-length direct-impingement system for this configuration and equips it with a free-float handguard, ROMEO-MSR Gen II optic and TriggerTech two-stage flat trigger. The 1:7 twist supports a broad range of 5.56 NATO ammunition, but customers should evaluate expected terminal performance and velocity from an 11.5-inch barrel rather than relying on rifle-length published numbers.

Who Is This Product For?

This configuration is for buyers who specifically want a compact AR-pattern pistol and understand the legal, ballistic and handling differences from a rifle. The Magpul BSL brace is part of the listed configuration, and the buyer remains responsible for applicable federal, state and local requirements. The factory optic and upgraded trigger reduce the amount of immediate setup required, while the M-LOK handguard provides accessory-mounting space. One 30-round magazine is listed as included. Recoil Gunworks does not provide legal advice and does not imply that any later modification is lawful in every jurisdiction.

Frequently Asked Questions

Is this the 16-inch M400 Forge rifle?

No. PM400-556N-11B-FORGE is the 11.5-inch pistol configuration.

Does it include the ROMEO-MSR Gen II?

Yes. The verified factory package includes the 2 MOA red-dot optic.

What magazine is included?

The product is listed with one 30-round magazine, subject to applicable shipping restrictions.